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International brand dossier

CAT Pumps

Cat Pumps is a high-pressure positive-displacement pump manufacturer with more than 50 years of triplex pump experience.In water treatment and cleaning systems it is relevant where long-life high-pressure plunger pumps, seal design, chemical compatibility, and dependable continuous duty matter.

CAT Pumps's position in pumps and pumping equipment is defined by product families such as Plunger Pumps and Piston Pumps.The portfolio is best understood inside raw water intake, RO/NF feed, transfer, boosting, chemical dosing, wastewater lift, and desalination hydraulics, where engineers compare the technology route, family boundaries, and duty fit before narrowing to individual models.

Representative series on this page include CAT pumps, 3CP1221-3CP1231-3CP1241 and 5CP6221-5CP6241CS-5CP6251.Selection should focus on flow, head, efficiency, NPSH margin, wetted materials, seals, and drive arrangement.These cues help users understand the brand's strongest fit before moving into the model index and product cards for finer comparison.

29

Indexed models

3

Product families

0

Subgroups

Model index

Product range and selection

How to choose CAT Pumps & Pumping

This section answers two questions: which main product families CAT offers, and which parameters to compare before choosing a specific model.

Step 1: Choose a product family by application

The main families shown on this page are General Products, Plunger Pumps, and Piston Pumps. Start with the treatment objective, equipment format, and operating duty, then use the model index below to compare exact specifications.

Step 2: Confirm the model by key parameters

After choosing a product family, compare flow and head, materials, efficiency, and duty cycle. Replacement projects should also verify installation or loading conditions, interfaces, and compatibility with the existing system; new projects should consider operating practice, maintenance, and spare-parts or consumables availability.

Product family overview

3 product familys on this page.

General Products

1 model in this family. Representative models: General Cataloque CAT pumps.

Plunger Pumps

23 models in this family. Representative models: 2SF05SEEL-2SF10SEEL-2SF15SEEL-2SF22SEEL-2SF25SEEL-2SF29SEEL-2SF35SEEL-2SF42SEEL, 3CP1221-3CP1231-3CP1241, 5CP6221-5CP6241CS-5CP6251.

Piston Pumps

5 models in this family. Representative models: 280, 333, 621.

Quick Model Index

Fast lookup for 29 indexed products

Search models, families, applications, or parameters; compare 2–4 candidates, save or export the shortlist, and open it on another device by link or QR code.

Products & documents

Showing 29 of 29 models

Select 2–4 models to compare. Your shortlist is saved on this device and can travel by link or QR code.

Ask with selected models

General Cataloque CAT pumps

General Products

Flow: 0.13 to 240 gpm (0.49 to 908 lpm) · Flow range (at 1750 RPM): 0.13 to 0.5 gpm · Power: 1/3 hp, 1/2 hp, or 3/4 hp electric motors (Permanent Magnet or Induction)

CAT Pumps offers triplex reciprocating and centrifugal pumps for diverse industrial applications. Available materials include brass, stainless steel.

DetailsPDF

2SF05SEEL-2SF10SEEL-2SF15SEEL-2SF22SEEL-2SF25SEEL-2SF29SEEL-2SF35SEEL-2SF42SEEL

Plunger Pumps

Horsepower: 0.5 to 2.5 HP · Required Horsepower Calculation: gpm x psi / 1460 · Discharge Pressure Range: 100-1200 psi (7-85 bar)

These are stainless steel direct-drive plunger pumps engineered for high duty cycles in SWRO applications.

DetailsPDF

3CP1221-3CP1231-3CP1241

Plunger Pumps

Pressure Range: 100 to 2000 PSI (7 to 140 BAR) for all models · Inlet Pressure Range: Flooded to 70 PSI (Flooded to 4.9 BAR) · Maximum Liquid Temperature: 160°F (71°C)

This is a CAT Pumps 3CP Series triplex plunger pump designed for high-pressure applications. It features a 316 stainless steel construction.

DetailsPDF

5CP6221-5CP6241CS-5CP6251

Plunger Pumps

Electric Horsepower Requirements: See the official PDF for exact tabulated values across various pressures · Maximum Liquid Temperature: 160 °F (71 °C) · Inlet Ports (2): 1/2" NPTF

These CAT Pumps 5CP Stainless Steel Plunger Pumps feature a triplex plunger design and are constructed with 316 stainless steel valves, seats, and manifold.

DetailsPDF

7CP6111-7CP6111C-7CP6171-7CP6171C-7CP6111G1

Plunger Pumps

Inlet Pressure Range: Flooded to 70 psi (Flooded to 4.9 bar) · Maximum Liquid Temperature: 140°F (60°C) · Pressure Range (all models): 100 to 2000 psi (7 to 140 bar)

This CAT Pumps 7CP series is a stainless steel plunger pump designed for continuous duty applications.

DetailsPDF

231-241-271-237-247-277

Plunger Pumps

Materials in Contact with Water: All parts in contact with water are made of AISI 304 stainless steel. This includes impellers, motor casing, and suction/discharge connections · Operating Range: 4 to 29 m³/h with discharge head up to 249 m · Liquid Temperature Range: -20°C to +90°C

These are vertical-axis, in-line multi-stage centrifugal pumps designed for water boosting in domestic or industrial installations.

DetailsPDF

311-341-351-311C-317-347-357

Plunger Pumps

Crankcase Capacity: 18 oz. (0.55 l) · Maximum Liquid Temperature: 160°F (71°C) · Inlet Ports (2): 1/2” NPTF

CAT Pumps 5 Frame Triplex Plunger Pumps are designed for high-pressure applications with their durable construction and wet seal design.

DetailsPDF

781-781K

Plunger Pumps

Flow: 4.5 gpm (17 lpm) · Pressure Range: 100 to 5000 psi (7 to 345 bar) · Inlet Pressure Range: Flooded to 40 psi (Flooded to 2.8 bar)

This 8-frame block-style stainless steel plunger pump is available in standard (781) or flushed (781K) models for high-pressure applications.

DetailsPDF

1050-1051-1051C-1051D-1057

Plunger Pumps

Crankcase Capacity: 42 oz. (1.26 l) · Inlet Ports (2): 3/4” NPTF · Flushing Ports (2) (Model 1051C): 1/8” NPTF

These CAT Pumps 15 Frame plunger pumps are available in standard, stainless steel, stainless steel flushed, duplex stainless steel.

DetailsPDF

1530-1531

Plunger Pumps

Flow: 15.6 GPM (59 L/M) · Pressure Range: 100 to 1500 PSI (7 to 105 BAR) · Inlet Pressure Range: Flooded to 70 PSI (Flooded to 4.9 BAR)

The CAT Pumps 15 Frame Plunger Pump series includes models 1530 with a brass manifold and 1531 with a stainless steel manifold.

DetailsPDF

1540E-1540EC-1541

Plunger Pumps

Flow: 18.0 gpm (68 lpm) · Pressure Range: 100 to 1200 psi (7 to 85 bar) · Inlet Pressure Range: Flooded to 70 psi (Flooded to 4.9 bar)

The CAT Pumps 1540E-1540EC-1541 are triplex plunger pumps designed for high-efficiency operation and low pulsation. Available in standard brass (1540E).

DetailsPDF

1861-1861K

Plunger Pumps

Flow (Model 1861): 10.0 gpm (38 l/m) · Pressure Range: 100 to 3000 psi (7 to 210 bar) · Inlet Pressure Range: +10 to 0 psi (0.70 to 4 bar)

The CAT Pumps 18 Frame is a block-style stainless steel triplex plunger pump available in standard (1861) and flushed (1861K) models. Key features include dual V-Packings.

DetailsPDF

2510-2511

Plunger Pumps

Flow: 20 gpm (76 lpm) · Maximum Liquid Temperature: 140°F (60°C) · Inlet Pressure Range: Flooded to 70 psi (Flooded to 4.9 bar)

The CAT Pumps 2510 and 2511 are triplex plunger pumps designed for high-efficiency fluid handling. Model 2510 features a brass manifold.

DetailsPDF

2530-2530E-2531-2537

Plunger Pumps

Inlet Pressure Range: Flooded to 70 PSI (Flooded to 4.9 BAR) · Maximum Liquid Temperature: 160°F (71°C) · Crankcase Capacity: 84 oz. (2.5 L)

These are CAT Pumps 25 Frame Triplex Plunger Pumps available with brass, stainless steel, or nickel aluminum bronze manifolds. They offer up to 25 GPM and 1200 PSI.

DetailsPDF

2831-2831K

Plunger Pumps

Maximum Liquid Temperature: 160 °F (71 °C) · Inlet Pressure Range: Flooded to 70 PSI (Flooded to 4.9 BAR) · Crankcase Capacity: 84 oz. (2.5 L)

The CAT Pumps 2831 and 2831K are block-style stainless steel plunger pumps designed for various fluid transfer applications.

DetailsPDF

3535-3535C-3531-3531C-3537

Plunger Pumps

Flow: 36 gpm (136 l/m) · Pressure Range: 100 to 1200 psi (7 to 85 bar) · Inlet Pressure Range: Flooded to 70 psi (Flooded to 0.9 bar)

These CAT Pumps 35 Frame triplex plunger pumps are available in models with brass, stainless steel, or nickel aluminum bronze wetted ends.

DetailsPDF

3545-3541-3541C-3537C

Plunger Pumps

Flow: 45 GPM (170 L/M) · Pressure Range: 100 to 1000 PSI (7 to 70 BAR) · Inlet Pressure Range: Flooded to 70 PSI (Flooded to 4.9 BAR)

These CAT Pumps 35 Series Triplex Plunger Pumps offer superior design and quality materials for smooth liquid flow and extended seal life.

DetailsPDF

3801-3811-3801K-3811K

Plunger Pumps

Inlet Pressure: Flooded to 70 psi (4.9 bar) · Maximum Liquid Temperature: 160°F (71°C) · Crankcase Capacity: 4.2 Qts. (4 l)

These are CAT Pumps 38 Frame block-style stainless steel plunger pumps, available in standard and flushed K models.

DetailsPDF

3821-3831-3832K-3831K

Plunger Pumps

Maximum Liquid Temperature: 160°F (71°C) · Inlet Pressure: Flooded to 70 PSI (Flooded to 4.9 BAR) · Crankcase Capacity: 4.2 Qts. (4 L)

These CAT Pumps 38 Frame stainless steel plunger pumps are designed for high-pressure applications up to 2000 PSI. Available in standard and K models.

DetailsPDF

6760-6761-6762-6767-6767C

Plunger Pumps

Flow: 60 GPM (227 L/M) · Pressure Range: 100 to 1200 PSI (7 to 85 BAR) · Inlet Pressure Range: Flooded to 50 PSI (Flooded to 3.5 BAR)

These CAT Pumps are 60 Frame Triplex Plunger Pumps available in multiple material configurations, including brass, stainless steel, and nickel aluminum bronze.

DetailsPDF

6775-6771-6777

Plunger Pumps

Flow: 75 gpm (284 l/m) · Pressure Range: 100 to 1200 psi (7 to 85 bar) · Inlet Pressure Range: Flooded to 50 psi (Flooded to 3.5 bar)

This is a CAT Pumps 60 Frame Triplex Plunger Pump series, designed for high efficiency and low pulsation. Available in Brass, Stainless Steel, or Nickel Aluminum Bronze.

DetailsPDF

6801-6811-6801K-6811K

Plunger Pumps

Flow: 15.0 GPM (57 L/M) · Inlet Pressure Range: Flooded to 50 PSI (Flooded to 3.5 BAR) · Maximum Liquid Temperature: 140°F (60°C)

These CAT Pumps 68 Frame block-style stainless steel plunger pumps, available in standard and flushed models, are designed for high-pressure applications.

DetailsPDF

6831-6831K

Plunger Pumps

Flow: 40 gpm (151 l/m) · Pressure Range: 100 to 2300 psi (7 to 160 bar) · Inlet Pressure Range: Flooded to 50 psi (Flooded to 3.5 bar)

The CAT Pumps 6831 and 6831K are stainless steel triplex plunger pumps designed for high efficiency with ceramic plungers and 316 SS manifolds.

DetailsPDF

6841-6861-6841K-6861K

Plunger Pumps

Max. Liquid Temperature: 140°F (60°C) · Inlet Pressure Range: Flooded to 50 PSI (Flooded to 3.5 BAR) · Crankcase Capacity: 10 Qts. (9.46 L)

This is a CAT Pumps 68 Frame triplex plunger pump constructed with 316 stainless steel wetted parts for strength and corrosion resistance.

DetailsPDF

280

Piston Pumps

Flow: 0.13 to 240 gpm (0.49 to 908 lpm) · Flow range: 0.68 to 30 gpm (2.6 to 113.5 lpm) · Pressure: 100 to 10,000 psi (6.9 to 689 bar)

CAT Pumps offers triplex reciprocating high-pressure pumps with various manifold materials like brass, nickel aluminum bronze, and stainless steels.

DetailsPDF

333

Piston Pumps

Maximum Liquid Temperature: 160°F (71°C) · Inlet Pressure Range: –8.5 to +40 psi (–0.6 to +2.8 bar) · Liquid pH Range: 5-9 pH (for 304S cylinders and sleeves)

The 333 is a standard brass 4-frame triplex piston pump designed for smooth, low-pulsation flow with strong suction. It features hard chrome-plated 304S cylinders.

DetailsPDF

621

Piston Pumps

Crankcase Capacity: 40 oz. (1.2 l) · Maximum Liquid Temperature: 160°F (71°C) · Inlet Pressure Range: –8.5 to +40 psi (–0.6 to +2.8 bar)

The CAT Pumps 621 is a stainless steel 10 Frame Triplex Piston Pump designed for general use. It features a durable, die-cast aluminum crankcase, a chrome-moly crankshaft.

DetailsPDF

1520

Piston Pumps

Crankcase Capacity: 84 oz. (2.5 L) · Inlet Ports (1): 1-1/4" NPTF · Discharge Ports (3): 1" NPTF

This is a 25 Frame Triplex Piston Pump designed for smooth operation with a lubricated crankcase and mechanically actuated inlet valves.

DetailsPDF

6020

Piston Pumps

Crankcase Capacity: 10 Qts. (9.46 l) · Inlet Pressure Range: –8.5 to +40 psi (–0.6 to +2.8 bar) · Inlet Port (1): 2" NPTF

This CAT Pumps 6020 is a 60 frame triplex uniflow piston pump designed for high-pressure applications.

DetailsPDF

Brand Products & Technical Documents

29 product profiles with integrated document access

Each card keeps the curated model introduction and combines the readable datasheet page, OEM PDF, and official source. Product understanding and document access now share one card set.

General Products

1 product profile

Pumps & Pumping
CAT Pumps logo

Product profile

General Cataloque CAT pumps

CAT Pumps offers triplex reciprocating and centrifugal pumps for diverse industrial applications. Available materials include brass, stainless steel.

Plunger Pumps

23 product profiles

Pumps & Pumping
CAT Pumps logo

Product profile

2SF05SEEL-2SF10SEEL-2SF15SEEL-2SF22SEEL-2SF25SEEL-2SF29SEEL-2SF35SEEL-2SF42SEEL

These are stainless steel direct-drive plunger pumps engineered for high duty cycles in SWRO applications.

Pumps & Pumping
CAT Pumps logo

Product profile

3CP1221-3CP1231-3CP1241

This is a CAT Pumps 3CP Series triplex plunger pump designed for high-pressure applications. It features a 316 stainless steel construction.

Pumps & Pumping
CAT Pumps logo

Product profile

5CP6221-5CP6241CS-5CP6251

These CAT Pumps 5CP Stainless Steel Plunger Pumps feature a triplex plunger design and are constructed with 316 stainless steel valves, seats, and manifold.

Pumps & Pumping
CAT Pumps logo

Product profile

7CP6111-7CP6111C-7CP6171-7CP6171C-7CP6111G1

This CAT Pumps 7CP series is a stainless steel plunger pump designed for continuous duty applications.

Pumps & Pumping
CAT Pumps logo

Product profile

231-241-271-237-247-277

These are vertical-axis, in-line multi-stage centrifugal pumps designed for water boosting in domestic or industrial installations.

Pumps & Pumping
CAT Pumps logo

Product profile

311-341-351-311C-317-347-357

CAT Pumps 5 Frame Triplex Plunger Pumps are designed for high-pressure applications with their durable construction and wet seal design.

Show remaining Plunger Pumps profiles (17)
Pumps & Pumping
CAT Pumps logo

Product profile

781-781K

This 8-frame block-style stainless steel plunger pump is available in standard (781) or flushed (781K) models for high-pressure applications.

Pumps & Pumping
CAT Pumps logo

Product profile

1050-1051-1051C-1051D-1057

These CAT Pumps 15 Frame plunger pumps are available in standard, stainless steel, stainless steel flushed, duplex stainless steel.

Pumps & Pumping
CAT Pumps logo

Product profile

1530-1531

The CAT Pumps 15 Frame Plunger Pump series includes models 1530 with a brass manifold and 1531 with a stainless steel manifold.

Pumps & Pumping
CAT Pumps logo

Product profile

1540E-1540EC-1541

The CAT Pumps 1540E-1540EC-1541 are triplex plunger pumps designed for high-efficiency operation and low pulsation. Available in standard brass (1540E).

Pumps & Pumping
CAT Pumps logo

Product profile

1861-1861K

The CAT Pumps 18 Frame is a block-style stainless steel triplex plunger pump available in standard (1861) and flushed (1861K) models. Key features include dual V-Packings.

Pumps & Pumping
CAT Pumps logo

Product profile

2510-2511

The CAT Pumps 2510 and 2511 are triplex plunger pumps designed for high-efficiency fluid handling. Model 2510 features a brass manifold.

Pumps & Pumping
CAT Pumps logo

Product profile

2530-2530E-2531-2537

These are CAT Pumps 25 Frame Triplex Plunger Pumps available with brass, stainless steel, or nickel aluminum bronze manifolds. They offer up to 25 GPM and 1200 PSI.

Pumps & Pumping
CAT Pumps logo

Product profile

2831-2831K

The CAT Pumps 2831 and 2831K are block-style stainless steel plunger pumps designed for various fluid transfer applications.

Pumps & Pumping
CAT Pumps logo

Product profile

3535-3535C-3531-3531C-3537

These CAT Pumps 35 Frame triplex plunger pumps are available in models with brass, stainless steel, or nickel aluminum bronze wetted ends.

Pumps & Pumping
CAT Pumps logo

Product profile

3545-3541-3541C-3537C

These CAT Pumps 35 Series Triplex Plunger Pumps offer superior design and quality materials for smooth liquid flow and extended seal life.

Pumps & Pumping
CAT Pumps logo

Product profile

3801-3811-3801K-3811K

These are CAT Pumps 38 Frame block-style stainless steel plunger pumps, available in standard and flushed K models.

Pumps & Pumping
CAT Pumps logo

Product profile

3821-3831-3832K-3831K

These CAT Pumps 38 Frame stainless steel plunger pumps are designed for high-pressure applications up to 2000 PSI. Available in standard and K models.

Pumps & Pumping
CAT Pumps logo

Product profile

6760-6761-6762-6767-6767C

These CAT Pumps are 60 Frame Triplex Plunger Pumps available in multiple material configurations, including brass, stainless steel, and nickel aluminum bronze.

Pumps & Pumping
CAT Pumps logo

Product profile

6775-6771-6777

This is a CAT Pumps 60 Frame Triplex Plunger Pump series, designed for high efficiency and low pulsation. Available in Brass, Stainless Steel, or Nickel Aluminum Bronze.

Pumps & Pumping
CAT Pumps logo

Product profile

6801-6811-6801K-6811K

These CAT Pumps 68 Frame block-style stainless steel plunger pumps, available in standard and flushed models, are designed for high-pressure applications.

Pumps & Pumping
CAT Pumps logo

Product profile

6831-6831K

The CAT Pumps 6831 and 6831K are stainless steel triplex plunger pumps designed for high efficiency with ceramic plungers and 316 SS manifolds.

Pumps & Pumping
CAT Pumps logo

Product profile

6841-6861-6841K-6861K

This is a CAT Pumps 68 Frame triplex plunger pump constructed with 316 stainless steel wetted parts for strength and corrosion resistance.

Piston Pumps

5 product profiles

Pumps & Pumping
CAT Pumps logo

Product profile

280

CAT Pumps offers triplex reciprocating high-pressure pumps with various manifold materials like brass, nickel aluminum bronze, and stainless steels.

Pumps & Pumping
CAT Pumps logo

Product profile

333

The 333 is a standard brass 4-frame triplex piston pump designed for smooth, low-pulsation flow with strong suction. It features hard chrome-plated 304S cylinders.

Pumps & Pumping
CAT Pumps logo

Product profile

621

The CAT Pumps 621 is a stainless steel 10 Frame Triplex Piston Pump designed for general use. It features a durable, die-cast aluminum crankcase, a chrome-moly crankshaft.

Pumps & Pumping
CAT Pumps logo

Product profile

1520

This is a 25 Frame Triplex Piston Pump designed for smooth operation with a lubricated crankcase and mechanically actuated inlet valves.

Pumps & Pumping
CAT Pumps logo

Product profile

6020

This CAT Pumps 6020 is a 60 frame triplex uniflow piston pump designed for high-pressure applications.

CAT Pumps Pumps & Pumping | Models & Datasheets | AquaChain Guide